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Model Pengaruh Tingkat Pendidikan, Pengalaman, Disiplin, Motivasi, Upah, Usia, Manajerial Terhadap Produktivitas Tenaga Kerja Konstruksi: Model of the Influence of Education Level, Experience, Discipline, Motivation, Wages, Age, Managerial on Construction Labour Productivity Waluyo, Rudi
JURNAL SAINTIS Vol. 24 No. 02 (2024)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2024.vol24(02).18292

[ID] Suatu keberhasilan proyek konstruksi secara keseluruhan tergantung dari keberhasilan setiap pekerjaan yang ada dalam proyek tersebut, sedangkan salah satu faktor yang mempengaruhi keberhasilan suatu pekerjaan adalah produktivitas tenaga kerjanya. Produktivitas tenaga kerja akan sangat berpengaruh juga terhadap besarnya keuntungan atau kerugian suatu proyek. Dalam pelaksanaan dilapangan hal tersebut terkadang bisa terjadi dikarenakan tenaga kerja yang kurang efektif di dalam pekerjaannya. Ada banyak faktor yang dapat mempengaruhi produktivitas kerja. Penelitian ini bertujuan untuk membangun model pengaruh tingkat pendidikan, pengalaman, disiplin, motivasi, upah, usia, dan manajerial terhadap produktivitas tenaga kerja konstruksi. Penelitian dilaksanakan pada proyek pembangunan perumahan di Kota Palangka Raya. Metode penelitian yang digunakan yaitu survei. Kuesioner disebarkan secara langsung kepada tenaga kerja Mandor, Kepala Tukang, dan Tukang yang bekerja pada proyek pembangunan perumahan di Kota Palangka Raya. Penelitian dilakukan selama 3 bulan dari bulan November 2023 – Januari 2024 di Kota Palangka Raya. Responden penelitian berjumlah 100 orang. Analisis data menggunakan structural equation modeling partial least square. Hasil penelitian menunjukkan bahwa variabel pengalaman, disiplin, upah, dan manajerial berpengaruh positif dan signifikan terhadap produktivitas tenaga kerja. Sedangkan variabel tingkat pendidikan, motivasi, dan usia tidak terdapat pengaruh positif dan tidak signifikan terhadap produktivitas tenaga kerja konstruksi. [EN] The success of a construction project as a whole depends on the success of each job in the project, while one of the factors that affect the success of a job is the productivity of its workforce. Labor productivity will also greatly affect the amount of profit or loss of a project. In field implementation, this can sometimes happen due to ineffective labor in its work. There are many factors that can affect labor productivity. The objective of study is to develop the influence model of education level, experience, discipline, motivation, wages, age, and managerial on construction labor productivity. Implementation research on housing construction projects in Palangka Raya City. The research method used by conducting a survey distributing questionnaires directly to the workforce of foremen, head builders, and builders who work on housing construction projects in Palangka Raya City. The research was conducted for 3 months from November 2023 - January 2024 in Palangka Raya City. Tthe number of respondents was 100 people. Data analysis using structural equation modeling partial least square. The results showed that experience, discipline, wages, and managerial variables have a positive and significant effect on labor productivity. While the variables of education level, motivation, and age have no positive and insignificant effect on construction labor productivity.

Optimalisasi Proyek Rehabilitasi dengan Metode Value Engineering: Studi Kasus Perencanaan TK. Bakuwu Kota Palangka Raya: Optimizing Rehabilitation Projects Using Value Engineering Methods: Case Study of Bakuwu Kindergarten Planning in Palangka Raya City Bangun, Dwi Candra Karya; Purwantoro, Almuntofa; Dewantoro
JURNAL SAINTIS Vol. 24 No. 02 (2024)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2024.vol24(02).18810

[ID] Pembangunan infrastruktur merupakan sektor yang krusial di Kota Palangka Raya karena berperan penting dalam pembangunan ekonomi, sosial, dan pendidikan. Penyediaan infrastruktur dasar yang merata merupakan kunci mewujudkan kota sipil. Namun, pemborosan biaya proyek seringkali terjadi karena kurangnya ide, informasi dan desain yang efektif. Penelitian ini bertujuan untuk mengoptimalkan biaya dan kinerja proyek rehabilitasi gedung Taman Kanak-Kanak (TK) Bakuwu di Kota Palangka Raya melalui penerapan metode Value Engineering (VE). Penelitian ini diawali dengan pengumpulan data proyek, dilanjutkan dengan analisis melalui empat tahapan VE: Informasi, Kreatif, Analisis, dan Rekomendasi. Setiap tahapan berfokus pada evaluasi material yang digunakan dan pencarian alternatif yang lebih efisien melalui analisis biaya, kualitas, waktu pelaksanaan, dan kemudahan pelaksanaan menggunakan matriks evaluasi zero-one. Hasil penelitian menyarankan perubahan material untuk efisiensi biaya: Pekerjaan dinding bata merah diganti dengan alternatif bata ringan, Pekerjaan atap genteng metal diganti dengan seng gelombang BJLS 25 (80cm x 180cm), Pekerjaan lantai keramik polished 40x40 (granito) diganti dengan keramik ukuran 40x40 (Essenza), Pekerjaan kusen alumunium 4" tidak diganti. Total penghematan biaya yang dapat diperoleh setelah dilakukan Value Engineering sebesar Rp76.080.526,00- dengan persentase sebesar 5,69%. [EN] Infrastructure development is a crucial sector in Palangka Raya City as it plays an important role in economic, social and educational development. Equitable provision of basic infrastructure is key to realizing a civic city. However, project cost wastage often occurs due to lack of ideas, information and effective design. This research aims to optimize the cost and performance of the Bakuwu Kindergarten building rehabilitation project in Palangka Raya City through the application of the Value Engineering (VE) method. This research begins with project data collection, followed by analysis through four stages of VE: Information, Creative, Analysis, and Recommendation. Each stage focused on evaluating the materials used and finding more efficient alternatives through analyzing cost, quality, execution time, and ease of implementation using a zero-one evaluation matrix. The results suggested material changes for cost efficiency: Red brick wall work replaced with lightweight brick alternative, Metal tile roof work replaced with BJLS 25 wave zinc (80cm x 180cm), Polished ceramic floor work 40x40 (granito) replaced with ceramic size 40x40 (Essenza), 4” aluminum frame work is not replaced. The total cost savings that can be obtained after Value Engineering is IDR 76,080,526.00- with a percentage of 5.69%.

Pengaruh Pemanfaatan Recycled Concrete Aggregate Sebagai Bahan Substitusi Agregat Kasar Terhadap Kuat Tekan Beton Geopolimer: The Effect of Using Recycled Concrete Aggregate to Substitute Coarse Aggregate on the Compressive Strength of Geopolymer Concrete Megasari, Shanti Wahyuni
JURNAL SAINTIS Vol. 24 No. 02 (2024)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2024.vol24(02).19095

[ID] Inovasi material maju yang ramah lingkungan dilakukan dengan mengembangkan material konstruksi yang berasal dari limbah. Salah satunya adalah beton geopolimer yang memanfaatkan limbah fly ash sebagai pengganti semen dan recycled concrete aggregate (RCA) sebagai alternatif pengganti agregat kasar. Penggunakan limbah diharapkan dapat meningkatkan kualitas beton geopolimer. Tujuan penelitian adalah untuk menganalisis pengaruh substitusi recycled concrete aggregate terhadap kuat tekan beton geopolimer. Metode penelitian menggunakan studi eksperimental di laboratorium berdasarkan SNI 03-6825-2002 pada kuat tekan. Rancangan benda uji menggunakan molaritas aktivator 12M dan perbandingan katalitasator berupa Na2SiO3 (SH) dengan aktivator berupa KOH (SS) sebesar 2:1. Variasi subtitusi recycled concrete aggregate yang digunakan yaitu 0%, 25%, 50%, 75% dan 100% terhadap berat agregat kasar. Benda uji beton berbentuk silinder dengan diameter 10 dan tinggi 20 cm untuk pengujian kuat tekan sesuai dengan SNI 2847:2019. Pengujian kuat tekan digunakan pada umur 28 hari dengan perawatan suhu ruang. Hasil penelitian diperoleh nilai kuat tekan rata-rata dengan substitusi RCA 0%, 25%, 50%, 75%, 100% secara berurutan yaitu sebesar 2,89 MPa; 2,93 MPa; 3,27 MPa; 3,82 MPa dan 3,26 MPa. Nilai kuat tekan tertinggi diperoleh pada substitusi RCA sebesar 75% dan nilai kuat tekan rata-rata beton geopolimer mengalami peningkatan seiring dengan adanya penambahan substitusi RCA namun mengalami penurunan pada substusi RCA sebesar 100%. Hasil analisis kuat tekan beton geopoliner dengan metode analysis of variance diperoleh nilai Fhitung > Ftabel yaitu 3,52 > 3,11, sehingga dapat dinyatakan bahwa variasi substitusi recycled concrete aggregate berpengaruh terhadap nilai kuat tekan beton geopolimer [EN] Advanced material innovations that are environmentally friendly are carried out by developing construction materials derived from waste. One of them is geopolymer concrete that utilizes fly ash waste as a substitute for cement and recycled concrete aggregate (RCA) as an alternative to coarse aggregate. Waste users are expected to improve the quality of geopolymer concrete. The purpose of the study is to analyze the effect of recycled concrete aggregate substitution on the compressive strength of geopolymer concrete. The research method uses experimental studies in the laboratory based on SNI 03-6825-2002 on compressive strength. The design of the test piece uses an activator molarity of 12M and a ratio of the catalyst in the form of Na2SiO3 (SH) with the activator in the form of KOH (SS) of 2:1. The variations of recycled concrete aggregate substitution used are 0%, 25%, 50%, 75% and 100% to the weight of the coarse aggregate. Cylindrical concrete test piece with a diameter of 10 cm and a height of 20 cm for compressive strength testing in accordance with SNI 2847:2019. Compressive strength testing is used at 28 days of age with room temperature treatment. The results of the study obtained an average compressive strength value with RCA substitution of 0%, 25%, 50%, 75%, 100% respectively, which was 2,89 MPa; 2,93 MPa; 3,27 MPa; 3,82 MPa and 3,26 MPa. The highest compressive strength value was obtained in RCA substitution of 75% and the average compressive strength value of geopolymer concrete increased along with the addition of RCA substitution but decreased in RCA substitution by 100%. The results of the compressive strength analysis of geopolitan concrete by the analysis of variance method obtained the value of Fcal > Ftabel which is 3,52 > 3,11, so it can be stated that the variation of recycled concrete aggregate substitution has an effect on the compressive strength value of geopolymer concrete

Study Nilai Biaya Dan Waktu Alat Berat Pada Proyek Pembangunan Struktur Pipe Rack: Study of Cost and Time Value of Heavy Equipment on Pipe Rack Structure Project Yanto Martha; Sapitri; Oktavia, Ferly; Oktaviani, Atika
JURNAL SAINTIS Vol. 24 No. 02 (2024)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2024.vol24(02).20537

[IN] Pada proyek konstruksi penggunaan alat berat untuk membantu jalannya pekerjaan sering dilakukan karena dapat meningkatkan produktivitas dari pada alat konvensional. Penggunaan alat berat di proyek berfungsi untuk mempersingkat waktu dan dapat mengoptimalkan suatu pekerjaan dalam proyek tersebut. Pipe rack structure adalah struktur baja atau beton yang ditinggikan yang dirancang untuk mendukung baki pipa, listrik, dan kabel instrumen. Permasalahan yang sering dihadapi dalam pembangunan pipe rack structure dengan menggunakan alat berat adalah biaya dan waktu yang terbatas, kondisi lingkungan, cuaca dan faktor – faktor lain yang dapat membuat keterlambatan pekerjaan. Kondisi seperti ini yang kemudian berdampak pada nilai biaya dan waktu alat berat dan berpengaruh terhadap proses pembangunan infrastruktur. Analisa mengenai nilai biaya dan waktu dengan mempertimbangkan faktor-faktor penyebab perlu dilakukan agar didapat hasil yang efektif dan efisien. Penelitian ini bertujuan untuk menghitung waktu dan biaya yang dibutuhkan oleh alat berat pada pekerjaan pembangunan pipe rack structure. Metode pengamatan dilakukan dengan cara time study, yaitu pengamatan langsung di lapangan untuk memperoleh waktu siklus dan diskusi dengan pihak-pihak terkait. Kemudian data diolah untuk mendapatkan gambaran dari hasil penelitian yang telah dilakukan. Hasil menunjukkan bahwa besar biaya operasional alat berat pada proyek pembangunan pipe rack structure berdasarkan perhitungan data lapangan dengan biaya operasional Crawler crane Zoomlion ZCC550H-1 sebesar Rp 838.725,00 perjam, tower crane Hino P11C-UN sebesar Rp 1.626.800,00 dan Truck Trailer sebesar Rp Rp 1.801.609,00 /jam. [EN] In construction projects, the use of heavy equipment to help carry out work is often done because it can increase productivity compared to conventional equipment. The use of heavy equipment in projects serves to shorten time and can optimize work in the project. A pipe rack structure is an elevated steel or concrete structure designed to support pipe trays, electrical, and instrument cables. Problems that are often faced in building pipe rack structures using heavy equipment are limited costs and time, environmental conditions, weather and other factors that can cause work delays. These conditions then have an impact on the cost and time value of heavy equipment and influence the infrastructure development process. Therefore, an analysis of the value of costs and time by considering the causal factors needs to be carried out in order to obtain effective and efficient results. This research aims to calculate the time and costs required for heavy equipment for a pipe rack structure construction project. The observation method is carried out by means of time study, namely direct observation inthe field to obtain cycle times and discussions with related parties. Then, process the data to get an overview of the results of the research that has been carried out. The results show that the operational costs for heavy equipment in the structure pipe rack construction project were obtained based on field data calculations with operational costs for the Zoomlion ZCC550H-1 crawler crane of IDR 838,725.00 per hour, the Hino P11C-UN tower crane of IDR 1,626,800.00 and the Truck Trailer Rp. Rp. 1,801,609.00/ hour

Analisis Struktur Kolom Pendek Dengan Pendekatan Probabilitas Menggunakan Kombinasi Pembebanan Statik dan Dinamik: Short Column Structure Analysis with Probability Approach Using Combination Loading Static and Dynamic Sahril, Madian; Kurniawan, Mahadi; Sapitri; Syarif, Firman
JURNAL SAINTIS Vol. 22 No. 02 (2022)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2022.vol22(02).9392

[ID] Salah satu gedung perkuliahan dan auditorium 3 lantai di Pekanbaru mempunyai struktur bangunan yang cukup unik, dimana kolom dasar atau basemen memilik tinggi yang lebih pendek dari diatasnya. Kolom ini disebut dengan kolom pendek, dimana dengan struktur seperti itu dapat menimbulkan resiko kegagalan struktur pada kolom pendek tersebut. Dengan struktur kolom pendek tersebut besar kemungkinan menimbulkan resiko terjadi guling pada struktur kolom. Sehingga, penelitian ini bertujuan untuk mengetahui besarnya probabilitas kegagalan serta keandalan struktur kolom pendek tersebut.Pada penelitian ini probabilitas kegagalan bangunan dihitung menggunakan metode distribusi normal (Gaussian). Perhitungan distribusi normal menggunakan gaya aksial kolom pendek sebagai variabel untuk menghitung probabilitas. Gaya aksial ini didapatkan dari kombinasi pembebanan sesuai dengan SNI 1926-2019 dan dihitung dengan bantuan software ETABS 2016. Hasil dari probabilitas dihitung berdasarkan variasi beban dari 20 ton sampai 220 ton dengan interval 40. Hasil perhitungan distribusi normal didapatkan nilai probabilitas masing-masing variasi beban ialah 20 ton sebesar 13.6%, beban 60 ton sebesar 27.4%, beban 100 ton sebesar 50%, beban 140 ton sebesar 69.1%, beban 180 ton sebesar 86.4%, dan beban 220 ton sebesar 95.5%. Adapaun nilai keandalan masing-masing variasi beban ialah 20 ton 86.4%, beban 60 ton 72.6%, beban 100 ton 50%, beban 140 ton 30.9%, beban 180 ton 30.9%, beban 220 ton 4.5%. Berdasarkan batas risiko gempa 10-2 didapatkan hasil sebesar ≤ 65.72 ton, beban yang digunakan sebagai perencanaan ialah beban ≤ 60 ton dengan probabilitas keruntuhan sebesar 27,4% dan keandalan 72,6%. [EN] One of the lecture buildings and a 3-story auditorium in Pekanbaru has a quite unique building structure, where the base column or basement has a shorter height than above. This column is called a short column, where with such a structure there can be a risk of structural failure in the short column. With such a short column structure, it is likely that there will be a risk of overturning in the column structure. Thus, this study aims to determine the probability of failure and the reliability of the short column structure. In this study the probability of building failure is calculated using the normal distribution method (Gaussian). The calculation of the normal distribution uses the short column axial force as a variable to calculate the probability. This axial force is obtained from a combination of loading in accordance with SNI 1926-2019 and calculated with the help of the ETABS 2016 software. The results of the probability are calculated based on load variations from 20 tons to 220 tons with intervals of 40. The results of the normal distribution calculation show that the probability value of each load variation is 20 tons by 13.6%, 60 tons at 27.4%, 100 tons at 50%, 140 tons at 69.1%, 180 tons at 86.4%, and 220 tons at load. tons of 95.5%. The reliability values for each load variation are 20 tons 86.4%, 60 tons 72.6% load, 50 tons load 50 percent, 140 tons load 30.9%, 180 tons load 30.9%, load 220 tons 4.5%. Based on the 10-2 earthquake risk limit, the result is 65.72 tons, the load used as a design is a load of 60 tons with a probability of collapse of 27.4% and reliability of 72.6%.

Pengaruh Pandemi Covid-19 Terhadap Produktivitas Pekerjaan Konstruksi di Pekanbaru: The Influence of The Covid-19 Pandemic on Construction Productivity in Pekanbaru Qorina Adhisty; Sapitri
JURNAL SAINTIS Vol. 23 No. 01 (2023)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2023.vol23(01).17745

[ID] Pandemi Covid-19 di Indonesia memberikan pengaruh yang signifikan bagi industri konstruksi. Pertumbuhan nilai indeks konstruksi mengalami penurunan pada tahun 2020. Ini disebabkan banyaknya permasalahan yang dihadapi oleh proyek, mulai dari pengalihan anggaran untuk penanganan Covid-19, keterbatasan sumber daya dan keadaan lainnya. Oleh karena itu, diperlukan strategi untuk menghadapi dampak yang ditimbulkan yang dinilai mampu menurunkan produktivitas pekerjaan konstruksi. Penelitian ini dilakukan untuk mengetahui pengaruh pandemi Covid-19 terhadap produktivitas pekerjaan konstruksi di Kota Pekanbaru. Metode penelitian yang digunakan adalah metode kualitatif dengan mengumpulkan data primer dari kuesioner yang disebarkan kepada 32 target responden yang berlatar belakang sebagai konsultan dan kontraktor proyek konstruksi. Pengolahan dan analisa data dilakukan menggunakan software Smart PLS untuk menguji validitas, reliabilitas, uji model struktural dan uji hipotesis. Hasil analisis menunjukkan uji validitas 11 dari 15 indikator dengan 4 variabel dinyatan valid, uji reliabilitas menunjukkan semua variabel memiliki tingkat keandalan yang tinggi, dan uji hipotesis menunjukkan bahwa H1, H2 dan H3 dapat diterima. Sehingga diperoleh kesimpulan bahwa pekerjaan konstruksi pada masa pandemi Covid-19 mengalami penurunan produktivitas sebesar 64% yang masing-masing disebabkan oleh bahan material sebesar 39,8%, perencanaan dan penjadwalan sebesar 19,4%, dan manajemen sebesar 27%. [EN] The Covid-19 pandemic in Indonesia has had a significant impact on the construction industry. The construction index value decreased in 2020. This is due to the many problems faced by the project, starting from budget diversion for handling Covid-19, limited resources and other circumstances. Therefore, strategies are needed to deal with the impacts which are considered capable of reducing the productivity of construction work. This research was conducted to determine the effect of the Covid-19 pandemic on the productivity of construction work in Pekanbaru. The research method used was a qualitative method by collecting primary data from questionnaires distributed to 32 target respondents with backgrounds as consultants and contractors on construction projects. Data processing and analysis were carried out using Smart PLS software to test validity, reliability, structural model testing and hypothesis testing. The results of the analysis show that the validity test of 11 out of 15 indicators with 4 variables is found to be valid, the reliability test shows that all variables have a high level of reliability, and the hypothesis test shows that H1, H2 and H3 are acceptable. So it was concluded that construction work during the Covid-19 pandemic experienced a decline in productivity of 64%, each of which was caused by materials by 39.8%, planning and scheduling by 19.4%, and management by 27%.

Pengaruh Penggunaan Polyurethane Terhadap Sifat Fisik dan Mekanik Beton Perkerasan Kaku: The Utilization of Polyurethane Plastic Waste on the Physical and MechanicalProperties of Rigid Pavement Concrete Harianto, Hengky; Puri, Anas; Elizar; Syahminan, Mohd
JURNAL SAINTIS Vol. 25 No. 02 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(02).18820

[IN] Penelitian ini mencoba memanfaatkan limbah plastik polyurethane sebagai bahan tambah pada campuran beton. Hal ini dalam upayamenambah khazanah alternatif pemanfaatan limbah plastik dalam rangka mengurangi limbah. Tujuan penelitian ini untuk mengetahuipengaruh penambahan polyurethane terhadap sifat fisik dan mekanik beton mutu rencana fc’ 36 MPa. Penelitian dilakukan melaluieksperimen di laboratorium. Sampel beton dibuat dengan variasi penambahan polyurethane 0%, 0,5% dan 1% terhadap berat campuranbeton normal. Selanjutnya campuran tersebut diuji workabilitas dan dibuat benda uji silinder dan balok beton. Benda uji dilakukan ujikuat tekan dan kuat tarik lentur pada umur 7, 14, 28 dan 56 hari. Hasil penelitian menunjukkan bahwa penambahan polyurethane tidakmemberikan pengaruh terhadap workabilitas beton. Berat isi beton rerata pada umur 28 hari berkisar antara 24,27 kN/m3 sampai 24,45kN/m3 dan berat isi beton berdasarkan benda uji balok sedikit lebih besar dibanding dari benda uji silinder. Penambahan polyurethanemenurunkan kuat tekan beton secara tidak signifikan dan masih 113% di atas kuat tekan rencana. Adapun kuat tarik lentur beton,penambahan polyurethane meningkatkan kuat tarik lentur beton cukup signifikan mencapai 26% pada penambahan 1% polyurethane dan28% pada penambahan 0,5% polyurethane. Persentase optimum polyurethane terhadap campuran beton dalam penelitian ini adalah 0,5%. [EN] This study tries to utilize polyurethane plastic waste as an additive in concrete mixtures. This is in an effort to add to the treasure ofalternative use of plastic waste to reduce waste. The aims of this study is to determine the effect of the addition of polyurethane on the physicaland mechanical properties of concrete for the design quality of the fc' 36 MPa. The research was conducted through experiments in thelaboratory. Concrete samples were made with variations in the addition of 0%, 0.5% and 1% polyurethane to the weight of normal concretemixture. The mixture was tested for workability and made a test piece for concrete cylinders and concrete blocks. The test pieces were testedfor compressive strength and flexural strength at the age of 7, 14, 28 and 56 days. The results showed that the addition of polyurethane did notaffect the workability of concrete. The average weight of concrete content at 28 days of age ranges from 24.45 kN/m3 to 24.27 kN/m3 and theweight of concrete content based on the block test piece is slightly larger than that of the cylinder test piece. The addition of polyurethanedecreases the compressive strength of concrete insignificantly and is still 113% above the planned compressive strength. As for the flexuralstrength of concrete, the addition of polyurethane significantly increases the flexural strength of concrete reaching 26% at the addition of 1%polyurethane and 28% at the addition of 0.5% polyurethane. The optimum percentage of polyurethane to concrete mixture in this study was 0.5%.

Optimization of Accelerometer Sensor Location In Arch Bridge Monitoring System Using The Sensor Elimination Using Capital Assurance Criterion (SEAMAC) Method Ritonga, Qonita; Kurniawan, Mahadi; Syarif, Firman; Rachmat Setiawan, Panji; Ahmadi , Heri; Raveena Putri, Citra; Oktavia, Ferly
JURNAL SAINTIS Vol. 25 No. 01 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(01).18997

In developing countries such as Indonesia, various fields of construction are currently being actively developed, especially bridge construction. Damage to the bridge structure itself requires very large repair costs. Currently, a monitoring system is being introduced to assess the condition of structures against dynamic loads, namely SHMS (Structural Health Monitoring System). The research aims to determine Finite Element Modeling, the optimal location, and several accelerometer sensors. To determine the condition of the arch bridge structure, it is necessary to detect damage through the results of the structural response recorded via the accelerometer sensor. In identifying the optimum number and location of sensors, the method used in this research is SEAMAC (Sensor Elimination Using Modal Assurance Criterion). Where this method is an algorithm method that performs an elimination on the sensor. The optimal placement of accelerometer sensors is determined using the Sensor Elimination Using Modal Assurance Criterion (SEAMAC) method, focusing on the floor plate and the bridge arch frame. Proper sensor placement is crucial as it yields important location data essential for identifying the modal characteristics of the bridge structure. In total, 16 accelerometer sensor locations were identified, with 8 sensors designated for both the floor plate and the arch frame.

Recommended Clauses for Green Consultancy Contract in the Construction Sector Hansen, Seng; Bintang Koesalamawardi, Ario; Sandrica Ng, Yoshie
JURNAL SAINTIS Vol. 25 No. 01 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(01).19340

It is undeniable that the construction industry has a significant impact on the destruction of the natural environment. Therefore, policy makers and key stakeholders are trying to overcome the impact of the construction sector through the implementation of the green building concept in every stage of construction work. However, this effort encounters various obstacles such as low understanding of green building, low participation in implementing green building concept, and the emergence of various risks in green building projects. This study aims to investigate the contractual aspects of green building projects through a comprehensive approach that includes integrative literature reviews, questionnaire surveys, and a focus group discussion. This study found eleven contractual issues of green consultancy contracts. Furthermore, based on these findings, various clauses were developed that were recommended to be included in the green consultancy contracts. This research is useful for the body of knowledge related to the development of green consultancy contracts in the construction sector. Practically, the results of this study can be used directly by green building consultants in negotiating their contracts with the employer.

Pengaruh Transmigrasi Terhadap Perkembangan Wilayah Kepenghuluan Labuhan Tangga Baru Kecamatan Bangko Kabupaten Rokan Hilir: The Influence of Transmigration on the Development of the Labuhan Tangga Baru Village, Bangko District, Rokan Hilir Regency Adam, Fran; Puji Astuti
JURNAL SAINTIS Vol. 25 No. 01 (2025)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2025.vol25(01).20909

Transmigrasi adalah salah satu program kependudukan di Indonesia yang sudah berlangsung cukup lama. Dimulai dari jaman pemerintahan kolonial Belanda Tahun 1905 (dikenal dengan istilah kolonisasi) dengan tujuan utama selain untuk mengurangi kepadatan penduduk di Pulau Jawa, juga untuk memenuhi kebutuhan tenaga kerja di daerah-daerah luar Jawa. Kepenghuluan Labuhan Tangga Baru merupakan bagian dari Kecamatan Bangko, Kabupaten Rokan Hilir, Provinsi Riau yang mengalami proses transmigrasi, pada Tahun 1998. Tujuan penelitian ini adalah mengidentifikasi pengaruh transmigrasi terhadap kesejahteraan masyarakat dan pengaruhnya, perkembangan wilayah Kepenghuluan Labuhan Tangga Baru. Penelitian ini menggunakan metode deskriptif kualitatif, dengan teknik pengumpulan data primer dan sekunder. Analisis pengolahan data yang digunakan adalah analisis metode analisis statistika deskriptif melalui tabel rerata (cross tabulation) menggunakan software SPSS 13. Berdasarkan hasil penelitian terdapat perubahan kondisi sosial ekonomi masyarakat pelaku transmigrasi di Kepenghuluan Labuhan Tangga Baru, dalam hal ini pekerjaan dan tingkat pendapatan yang jauh lebih baik, jika dibandingkan dengan kondisi sosial-ekonomi di daerah asalnya. Peran transmigrasi bagi perkembangan wilayah telah menghasilkan berbagai perubahan pada sarana pendidikan, kesehatan, dan peribadatan. Program transmigrasi di Kepenghuluan Labuhan Tangga Baru berpengaruh baik terhadap masyarakat transmigrasi dan masyarakat tempatan. Transmigration is one of Indonesia's long-standing population programs, dating back to the Dutch colonial era in 1905, originally aimed at reducing population density on the island of Java and providing labor to areas outside of Java. Labuhan Tangga Baru Village, which is located in Bangko District, Rokan Hilir Regency, Riau Province, underwent a transmigration process in 1998.The purpose of this study was to examine the impact of transmigration on community welfare and its implications for the development of Labuhan Tangga Baru Village. The research employed a qualitative descriptive method, utilizing both primary and secondary data collection techniques. Data analysis was conducted using descriptive statistical methods, specifically through cross-tabulation with SPSS 13 software. The findings from previous research indicate that there have been significant improvements in the socio-economic conditions of the transmigrant community in Labuhan Tangga Baru. Employment opportunities and income levels are notably better compared to the conditions in their original regions. Furthermore, the transmigration program has positively influenced regional development, leading to enhancements in educational facilities, health care, and places of worship. Overall, it can be concluded that the transmigration program has had a beneficial effect on the transmigrant community and local peoples.

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Augusta Adha

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Augusta Adha

Contact Email augusta.adha@eng.uir.ac.id

Phone -

Journal Mail Official saintis@journal.uir.ac.id

Editorial Address -

Location Kota pekanbaru, Riau INDONESIA

Abstract

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Abstract

Contact Name
Augusta Adha

Contact Email
augusta.adha@eng.uir.ac.id

Phone
-

Journal Mail Official
saintis@journal.uir.ac.id

Editorial Address
-

Location
Kota pekanbaru,

Riau

INDONESIA